ABAP Select data from SAP table MMPUR_PRINT_SRVLINE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_PRINT_SRVLINE table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to MMPUR_PRINT_SRVLINE. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the MMPUR_PRINT_SRVLINE table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_MMPUR_PRINT_SRVLINE TYPE STANDARD TABLE OF MMPUR_PRINT_SRVLINE,
      WA_MMPUR_PRINT_SRVLINE TYPE MMPUR_PRINT_SRVLINE,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <MMPUR_PRINT_SRVLINE> TYPE MMPUR_PRINT_SRVLINE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MMPUR_PRINT_SRVLINE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MMPUR_PRINT_SRVLINE
  INTO TABLE IT_MMPUR_PRINT_SRVLINE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_PRINT_SRVLINE
*  INTO TABLE @DATA(IT_MMPUR_PRINT_SRVLINE2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_MMPUR_PRINT_SRVLINE INDEX 1 INTO DATA(WA_MMPUR_PRINT_SRVLINE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MMPUR_PRINT_SRVLINE ASSIGNING <MMPUR_PRINT_SRVLINE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_PRINT_SRVLINE>-EBELP = 1.
<MMPUR_PRINT_SRVLINE>-P_PACKNO = 1.
<MMPUR_PRINT_SRVLINE>-WARPL = 1.
<MMPUR_PRINT_SRVLINE>-INTROW = 1.
<MMPUR_PRINT_SRVLINE>-SRVTYP = 1.

ENDLOOP.

LOOP AT IT_MMPUR_PRINT_SRVLINE INTO WA_MMPUR_PRINT_SRVLINE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_PRINT_SRVLINE-EXTROW, sy-vline,
  WA_MMPUR_PRINT_SRVLINE-SRVPOS, sy-vline,
  WA_MMPUR_PRINT_SRVLINE-KTEXT1, sy-vline,
  WA_MMPUR_PRINT_SRVLINE-MENGE, sy-vline,
  WA_MMPUR_PRINT_SRVLINE-MEINS, sy-vline,
  WA_MMPUR_PRINT_SRVLINE-TBTWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_PRINT_SRVLINE you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_MMPUR_PRINT_SRVLINE TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_MMPUR_PRINT_SRVLINE INTO WA_MMPUR_PRINT_SRVLINE.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field WARPL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRINT_SRVLINE-WARPL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRINT_SRVLINE-WARPL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SRVPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRINT_SRVLINE-SRVPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRINT_SRVLINE-SRVPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRINT_SRVLINE-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRINT_SRVLINE-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field IWEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRINT_SRVLINE-IWEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRINT_SRVLINE-IWEIN.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MMPUR_PRINT_SRVLINE_STR, 
EBELP TYPE STRING,
P_PACKNO TYPE STRING,
WARPL TYPE STRING,
INTROW TYPE STRING,
SRVTYP TYPE STRING,
EXTROW TYPE STRING,
SRVPOS TYPE STRING,
KTEXT1 TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
TBTWR TYPE STRING,
PREPEI TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
EXTSRVNO TYPE STRING,
INT_WORK TYPE STRING,
IWEIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_PRINT_SRVLINE_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_MMPUR_PRINT_SRVLINE_STR-EBELP sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-P_PACKNO sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-WARPL sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-INTROW sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-SRVTYP sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-EXTROW sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-SRVPOS sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-KTEXT1 sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-MENGE sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-MEINS sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-TBTWR sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-PREPEI sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-BRTWR sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-NETWR sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-EXTSRVNO sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-INT_WORK sy-vline 
WA_MMPUR_PRINT_SRVLINE_STR-IWEIN sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.